There is a public Wifi which I am unable to use, because I cannot get to the captive portal where i can put the user name and password. i can do that from my phone but not from my Ubuntu 18.04.3
I tried the solutions which are written here: Cannot reach public WIFI login page in Ubuntu 18.04 Captive Portal Issue but still it is not working. any help please.
Each time I want to convert jpg file to pdf by this command
convert *.jpg pictures.pdf
I have this error message:
convert: not authorized `pictures.pdf' @ error/constitute.c/WriteImage/1028.
The Wifi stops working after I've been using the Internet for a while, until I turn it off and turn on again.
The laptop is Lenovo Ideapad 110-15isk.
description: Wireless interface.
product: RTL8821AE 802.11ac PCIe Wireless Network Adapter.
vendor: Realtek Semiconductor Co., Ltd.
Err:1 http://us.archive.ubuntu.com/ubuntu zesty-updates/main amd64 libqt5test5 amd64 5.7.1+dfsg-2ubuntu4~1.17.04.1
403 Forbidden [IP: 91.189.91.26 80]
E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/q/qtbase-opensource-src/libqt5test5_5.7.1+dfsg-2ubuntu4~1.17.04.1_amd64.deb 403 Forbidden [IP: 91.189.91.26 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
W: The repository 'cdrom://Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719) xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch cdrom://Ubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)/dists/xenial/main/binary-amd64/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
E: Some index files failed to download. They have been ignored, or old ones used instead.